Deployment Error

Hi,
I created an HelloWorld application for android device [Emulator].
But I received error, For reference I had posted the error message.

Android package built successfully in 7.935 ms.
-- File: "E:/Qt Project Test/ArcGISQtQuickApplicationOne/build-ArcGISQtQuickApplicationOne-Android_for_armeabi_v7a_GCC_4_9_Qt_5_6_1-Debug/android-build//bin/QtApp-debug.apk"
Warning: QML import could not be resolved in any of the import paths: QtQuick.Extras.Private
Warning: QML import could not be resolved in any of the import paths: QtQuick.Extras.Private.CppUtils
Warning: QML import could not be resolved in any of the import paths: QtQuick.Extras.Private.CppUtils
15:38:10: The process "D:\Qt\Qt5.6.1\5.6\android_armv7\bin\androiddeployqt.exe" exited normally.
Error while building/deploying project ArcGISQtQuickApplicationOne (kit: Android for armeabi-v7a (GCC 4.9, Qt 5.6.1))
When executing step "Deploy to Android device"
15:40:22: Elapsed time: 02:24.